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Lythrypnus cobalus Bussing, 1990
KNAVE GOBY
Life   Vertebrata   Fish   Gobiidae   Lythrypnus

Lythrypnus cobalus
© Copyright Photographer/SFTEP, 2002 · 0
Lythrypnus cobalus

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Lythrypnus cobalus
© Copyright Photographer/SFTEP, 2002 · 0
Lythrypnus cobalus
espaņol

Overview
Main identification features
  • red + thin blue bars: body 4-7, head 3
  • dorsal fin 19, anal fin 15-16
  • pectoral grey, 21-22
  • under tail base: 5 black dots
Body moderate depth, compressed; head round; with fleshy crest along top of head and nape; mouth at front, oblique; head without lateral line pores; papillae around mouth, on cheeks and operculum and over eye; front nostril tubular, rear nostril a hole with raised front rim; tongue rounded to blunt, not bilobed; 1st dorsal fin with VI spines, 2nd & 3rd spines filamentous in male, 18-20 (usually 19) dorsal rays; 15-16 anal rays; 20-23 (usually 21-22) pectoral rays; pelvics fused into disc; scales large, rough; head, nape, chest and base of pectoral scaleless; ~43 lateral scale rows; tail short, round, with 17 segmented rays.

Red; 4-7 thin blue, dark-margined bars on body and 3 on head; dorsal, tail and anal fins orange, paler distally; pectorals and pelvics blue-grey; 5 black dots along underside of tail base.

Size: 2.6 cm.

Habitat: rocky bottoms.

Depth: 30-90 m.

Cocos Island.


Attributes
Abundance: Common.
Cites: Not listed.
Climate Zone: Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo).
Depth Range Max: 90 m.
Depth Range Min: 30 m.
Diet: mobile benthic crustacea (shrimps/crabs); zooplankton.
Eastern Pacific Range: Northern limit=6; Southern limit=6; Western limit=-88; Eastern limit=-87; Latitudinal range=1; Longitudinal range=1.
Egg Type: Benthic; Pelagic larva.
Feeding Group: Carnivore; Planktivore.
FishBase Habitat: Demersal.
Global Endemism: Tropical Eastern Pacific (TEP) endemic; East Pacific endemic; All species.
Habitat: Reef associated (reef + edges-water column & soft bottom); Rocks; Reef (rock &/or coral); Reef only.
Inshore Offshore: Inshore; Inshore Only.
IUCN Red List: Not evaluated / Listed.
Length Max: 2.6 cm.
Regional Endemism: Island (s) only; Island (s); TEP endemic; TEP oceanic island (s) endemic; Cocos Island endemic; All species.
Residency: Resident.
Salinity: Marine; Marine Only.
Water Column Position: Bottom; Bottom only;


Names
Scientific source:

Links to other sites

References
  • Bussing, W.A., 1990., New species of gobiid fishes of the genera Lythrypnus, Elacatinus and Chriolepis from the eastern tropical Pacific., Revista de Biologia Tropical, 38(1):99-118.
  • Fischer , W. , Krup , F. , Schneider , W. , Sommer , C. , Carpenter , K. E. and Niem, V. H., 1995., Guia FAO para la Identificacion de Especies de para los fines de la Pesca. Pacifico Centro-Oriental. Volumen II. Vertebrados - Parte 1., FAO2:647-1200.

Acknowledgements

I thank Ashley MacDonald and John Pickering, University of Georgia, for technical support in building this page.


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http://192.134.151.83/Summary/speciesSummary.php?genusname=Lythrypnus&speciesname=cobalus ---> https://fishbase.mnhn.fr/Summary/speciesSummary.php?genusname=Lythrypnus&speciesname=cobalus
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